OSAKA -- Two sport utility vehicles have been stolen from the 4,000-car parking lot of the newly opened Universal Studios Japan in Konohana Ward, Osaka, police said Friday.

Police, who suspect the same thief was responsible for the two thefts since similar models were targeted, have called on USJ to strengthen patrols of the lot to prevent a recurrence.

According to the police, a 42-year-old man from Kobe found his locked SUV missing from the lot at about 9:30 p.m. Sunday, the day after the park's grand opening.

On Thursday, a 35-year-old visitor also found his locked SUV gone at about 10 p.m., the police said.

Although visitors pay parking fees at the lot's entrance, there are no checks as they leave.

USJ officials said they are studying ways to prevent car thefts.